Ken-Ichi Koyakumaru

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Okayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
4-chloro-3,5-dimethyl-2-sulfonyl pyridines
- Patent number 6,350,876
- Issue date Feb 26, 2002
- Kuraray Co., Ltd.
- Ken-ichi Koyakumaru
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing 2-sulfonylpyridine derivatives and method for...
- Patent number 6,197,962
- Issue date Mar 6, 2001
- Kuraray Co., Ltd.
- Ken-ichi Koyakumaru
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Method for producing 2-sulfonylpyridine derivatives and method for...
- Publication number 20010051726
- Publication date Dec 13, 2001
- Kuraray Co., Ltd
- Ken-Ichi Koyakumaru
- C07 - ORGANIC CHEMISTRY